diff --git a/packages/designer/src/builtin-simulator/host.ts b/packages/designer/src/builtin-simulator/host.ts
index d12427074..f9fcd0517 100644
--- a/packages/designer/src/builtin-simulator/host.ts
+++ b/packages/designer/src/builtin-simulator/host.ts
@@ -69,6 +69,7 @@ import { LiveEditing } from './live-editing/live-editing';
 import { Project } from '../project';
 import { Scroller } from '../designer/scroller';
 import { isElementNode, isDOMNodeVisible } from '../utils/misc';
+import { debounce } from 'lodash';
 
 export interface LibraryItem extends Package{
   package: string;
@@ -205,8 +206,10 @@ export class BuiltinSimulatorHost implements ISimulatorHost<BuiltinSimulatorProp
     transactionManager.onStartTransaction(() => {
       this.stopAutoRepaintNode();
     }, TransitionType.REPAINT);
+    // 防止批量调用 transaction 时，执行多次 rerender
+    const rerender = debounce(this.rerender.bind(this), 28);
     transactionManager.onEndTransaction(() => {
-      this.rerender();
+      rerender();
       this.enableAutoRepaintNode();
     }, TransitionType.REPAINT);
   }
diff --git a/packages/designer/src/document/node/props/prop.ts b/packages/designer/src/document/node/props/prop.ts
index 87fcc5310..78349154f 100644
--- a/packages/designer/src/document/node/props/prop.ts
+++ b/packages/designer/src/document/node/props/prop.ts
@@ -173,7 +173,7 @@ export class Prop implements IPropParent {
       const values = this.items!.map((prop) => {
         return prop.export(stage);
       });
-      if (values.every(val => val === undefined)) {
+      if (values.every((val) => val === undefined)) {
         return undefined;
       }
       return values;
@@ -314,14 +314,21 @@ export class Prop implements IPropParent {
   @action
   setAsSlot(data: JSSlot) {
     this._type = 'slot';
-    const slotSchema: SlotSchema = {
-      componentName: 'Slot',
-      title: data.title,
-      id: data.id,
-      name: data.name,
-      params: data.params,
-      children: data.value,
-    };
+    let slotSchema: SlotSchema;
+    // 当 data.value 的结构为 { componentName: 'Slot' } 时，直接当成 slotSchema 使用
+    if ((isPlainObject(data.value) && data.value?.componentName === 'Slot')) {
+      slotSchema = data.value as SlotSchema;
+    } else {
+      slotSchema = {
+        componentName: 'Slot',
+        title: data.title,
+        id: data.id,
+        name: data.name,
+        params: data.params,
+        children: data.value,
+      };
+    }
+
     if (this._slotNode) {
       this._slotNode.import(slotSchema);
     } else {
diff --git a/packages/utils/src/index.ts b/packages/utils/src/index.ts
index 42f157294..4f47402a1 100644
--- a/packages/utils/src/index.ts
+++ b/packages/utils/src/index.ts
@@ -26,4 +26,4 @@ export * from './node-helper';
 export * from './clone-enumerable-property';
 export * from './logger';
 export * as css from './css-helper';
-export { transactionManager } from './start-transaction';
+export { transactionManager } from './transaction-manager';
diff --git a/packages/utils/src/start-transaction.ts b/packages/utils/src/transaction-manager.ts
similarity index 100%
rename from packages/utils/src/start-transaction.ts
rename to packages/utils/src/transaction-manager.ts